apparmor/profiles/apparmor.d/usr.sbin.dnsmasq

# ------------------------------------------------------------------
#
#    Copyright (C) 2009 John Dong <jdong@ubuntu.com>
#    Copyright (C) 2010 Canonical Ltd.
#
#    This program is free software; you can redistribute it and/or
#    modify it under the terms of version 2 of the GNU General Public
#    License published by the Free Software Foundation.
#
# ------------------------------------------------------------------

abi <abi/3.0>,

@{TFTP_DIR}=/var/tftp /srv/tftp /srv/tftpboot

include <tunables/global>
profile dnsmasq /usr/{bin,sbin}/dnsmasq flags=(attach_disconnected) {
  include <abstractions/base>
  include <abstractions/dbus>
  include <abstractions/nameservice>

  capability chown,
  capability net_bind_service,
  capability setgid,
  capability setuid,
  capability dac_override,
  capability net_admin,         # for DHCP server
  capability net_raw,           # for DHCP server ping checks
  network inet raw,
  network inet6 raw,

  signal (receive) peer=/usr/{bin,sbin}/libvirtd,
  signal (receive) peer=libvirtd,
  ptrace (readby) peer=/usr/{bin,sbin}/libvirtd,
  ptrace (readby) peer=libvirtd,

  owner /dev/tty rw,

  @{PROC}/@{pid}/fd/ r,

  /etc/dnsmasq.conf r,
  /etc/dnsmasq.d/ r,
  /etc/dnsmasq.d/* r,
  /etc/dnsmasq.d-available/ r,
  /etc/dnsmasq.d-available/* r,
  /etc/ethers r,
  /etc/NetworkManager/dnsmasq.d/ r,
  /etc/NetworkManager/dnsmasq.d/* r,
  /etc/NetworkManager/dnsmasq-shared.d/ r,
  /etc/NetworkManager/dnsmasq-shared.d/* r,
  /etc/dnsmasq-conf.conf r,
  /etc/dnsmasq-resolv.conf r,

  /usr/{bin,sbin}/dnsmasq mr,

  /var/log/dnsmasq*.log w,

  /usr/share/dnsmasq{-base,}/ r,
  /usr/share/dnsmasq{-base,}/* r,

  @{run}/*dnsmasq*.pid w,
  @{run}/dnsmasq-forwarders.conf r,
  @{run}/dnsmasq/ r,
  @{run}/dnsmasq/* rw,

  /var/lib/misc/dnsmasq.leases rw, # Required only for DHCP server usage

  /{,usr/}bin/{ba,da,}sh ix, # Required to execute --dhcp-script argument

  # access to iface mtu needed for Router Advertisement messages in IPv6
  # Neighbor Discovery protocol (RFC 2461)
  @{PROC}/sys/net/ipv6/conf/*/mtu r,

  # for the read-only TFTP server
  @{TFTP_DIR}/ r,
  @{TFTP_DIR}/** r,

  # libvirt config and hosts file for dnsmasq
  /var/lib/libvirt/dnsmasq/          r,
  /var/lib/libvirt/dnsmasq/*         r,

  # libvirt pid files for dnsmasq
  @{run}/libvirt/network/      r,
  @{run}/libvirt/network/*.pid rw,

  # libvirt lease helper
  /usr/lib{,64}/libvirt/libvirt_leaseshelper Cx -> libvirt_leaseshelper,
  /usr/libexec/libvirt_leaseshelper Cx -> libvirt_leaseshelper,

  # lxc-net pid and lease files
  @{run}/lxc/dnsmasq.pid    rw,
  /var/lib/misc/dnsmasq.*.leases rw,

  # lxd-bridge pid and lease files
  @{run}/lxd-bridge/dnsmasq.pid   rw,
  /var/lib/lxd-bridge/dnsmasq.*.leases rw,
  /var/lib/lxd/networks/*/dnsmasq.* r,
  /var/lib/lxd/networks/*/dnsmasq.leases rw,
  /var/lib/lxd/networks/*/dnsmasq.pid rw,

  # NetworkManager integration
  /var/lib/NetworkManager/dnsmasq-*.leases rw,
  @{run}/nm-dns-dnsmasq.conf r,
  @{run}/nm-dnsmasq-*.pid rw,
  @{run}/sendsigs.omit.d/*dnsmasq.pid w,
  @{run}/NetworkManager/dnsmasq.conf r,
  @{run}/NetworkManager/dnsmasq.pid w,
  @{run}/NetworkManager/NetworkManager.pid w,

  # dnsname plugin in podman
  @{run}/containers/cni/dnsname/*/dnsmasq.conf r,
  @{run}/containers/cni/dnsname/*/addnhosts r,
  @{run}/containers/cni/dnsname/*/pidfile rw,
  owner @{run}/user/*/containers/cni/dnsname/*/dnsmasq.conf r,
  owner @{run}/user/*/containers/cni/dnsname/*/addnhosts r,
  owner @{run}/user/*/containers/cni/dnsname/*/pidfile rw,

  # waydroid lxc-net pid file
  @{run}/waydroid-lxc/dnsmasq.pid rw,

  profile libvirt_leaseshelper {
    include <abstractions/base>

    /etc/libnl-3/classid r,

    /usr/lib{,64}/libvirt/libvirt_leaseshelper mr,
    /usr/libexec/libvirt_leaseshelper mr,

    owner @{PROC}/@{pid}/net/psched r,
    owner @{PROC}/@{pid}/status r,

    @{sys}/devices/system/cpu/ r,
    @{sys}/devices/system/cpu/possible r,
    @{sys}/devices/system/node/ r,
    @{sys}/devices/system/node/*/meminfo r,

    # libvirt lease and status files for dnsmasq
    /var/lib/libvirt/dnsmasq/*.leases  rw,
    /var/lib/libvirt/dnsmasq/*.status* rw,

    @{run}/leaseshelper.pid rwk,
  }

  # Site-specific additions and overrides. See local/README for details.
  include if exists <local/usr.sbin.dnsmasq>
}